. >> in reality an undercover fbi agent kept close tabs on him as posing as a taliban operative. as part of his plan he first wanted to ban the san francisco federal reserve. then he decided that was too secure so he chose the open bank of america site. according to the fbi, five gallon buckets like this one filled with chemicals would have been the basic pieces of the bomb. agents say he also purchased cell phones and other items to be used in a triggering device. the plan was to drive the bomb with its components packed aboard an s.u.v. and detonate it in a spot to bring down the entire bank of america building. it's a plot the customers were clearly shocked to here about. >> wow. seriously? >> the fbi said the man tried making contact with a taliban operative shortly after getting out of jail on an illegal firearms charge. he was arrested at his father's san jose home. according to court documents he lived in an rv that he often parked on the front driveway. his father would not let him into the home alone in order to safeguard his younger children because of his son's history